190426291 has 6 divisors (see below), whose sum is σ = 209311676. Its totient is φ = 173114700.

The previous prime is 190426283. The next prime is 190426339. The reversal of 190426291 is 192624091.

It is not a de Polignac number, because 190426291 - 2³ = 190426283 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (190426241) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 786765 + ... + 787006.

Almost surely, 2^190426291 is an apocalyptic number.

190426291 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

190426291 is a deficient number, since it is larger than the sum of its proper divisors (18885385).

190426291 is a wasteful number, since it uses less digits than its factorization.

190426291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1573793 (or 1573782 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 190426291 is about 13799.5032881622. The cubic root of 190426291 is about 575.3193346553.

The spelling of 190426291 in words is "one hundred ninety million, four hundred twenty-six thousand, two hundred ninety-one".